CVE-2024-27058Network attack vector

Kernel warning via unlocked dquot root fetch

Published May 1, 2024 · Updated Aug 5, 2026

Race condition in Linux tmpfs quota handling allows attackers to trigger a kernel warning while dquot information is removed. shmem_release_dquot() fetches the dquot rbtree root before acquiring dqopt->dqio_sem, so a concurrent tree rebalance can leave its search starting from a stale location. Triggering the flaw requires precisely timed concurrent quota acquire or release activity; the public record reports a warning but no crash or code execution.

CVSS severity4.7
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Linux tmpfs quota handling allows attackers to trigger a kernel warning while dquot information is removed. shmem_release_dquot() fetches the dquot rbtree root before acquiring dqopt->dqio_sem, so a concurrent tree rebalance can leave its search starting from a stale location. Triggering the flaw requires precisely timed concurrent quota acquire or release activity; the public record reports a warning but no crash or code execution.

The record

CVE
CVE-2024-27058
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.6
  2. Affected versionversion=eafc474e202978ac735c551d5ee1eb8c02e2be54 <0a69b6b3a026543bc215ccc866d0aea5579e6ce2
  3. Affected versionversion=eafc474e202978ac735c551d5ee1eb8c02e2be54 <617d55b90e73c7b4aa2733ca6cc3f9b72d1124bb
  4. Affected versionversion=eafc474e202978ac735c551d5ee1eb8c02e2be54 <c7077f43f30d817d10a9f8245e51576ac114b2f0
  5. Affected versionversion=eafc474e202978ac735c551d5ee1eb8c02e2be54 <f82f184874d2761ebaa60dccf577921a0dbb3810

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.6; version=eafc474e202978ac735c551d5ee1eb8c02e2be54 <0a69b6b3a026543bc215ccc866d0aea5579e6ce2; version=eafc474e202978ac735c551d5ee1eb8c02e2be54 <617d55b90e73c7b4aa2733ca6cc3f9b72d1124bb; version=eafc474e202978ac735c551d5ee1eb8c02e2be54 <c7077f43f30d817d10a9f8245e51576ac114b2f0; version=eafc474e202978ac735c551d5ee1eb8c02e2be54 <f82f184874d2761ebaa60dccf577921a0dbb3810

Published CVSS scores

4.7CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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